WATER-SOLUBLE FULLERENE COMPLEXES WITH N-VINYLCAPROLACTAM HOMO- AND COPOLYMERS AND A METHOD FOR PREPARATION OF THESE COMPLEXES Russian patent published in 2005 - IPC

FIELD: carbon materials.

SUBSTANCE: invention provides water-soluble C₆₀-fullerene complexes with N-vinylcaprolactam homo- and copolymers described by general formula A_n or A_n-B_m, in which A_n represents N-vinylcaprolactam homopolymer and A_n-B_m copolymer wherein A are N-vinylcaprolactam units and B units selected from series including units of N-vinylpyrrolidone, N-methyl-N-vinylacetamide and N-isopropylacrylamide, n=10-90 mol % and m=10-90 mol %, provided that molecular mass of N-vinylcaprolactam homo- and copolymers ranges from 70000 to 170000 Da and content of C₆₀-fullerene ranges from 0.75 to 3.3 wt %. The complexes are prepared via interaction of polymers with fullerene in organic solvents followed by removal of derivatives and dissolving dry residue in water. Starting polymer and fullerene are used in the form of their solution, the former in concentration 3.33-5.80% and the latter in concentration 0.09-0,32%, fullerene-to-polymer weight ratio ranging between 0.8:1 and 4.0:1.

EFFECT: expanded synthetic possibilities in the fullerene series.

2 cl, 1 tbl, 10 ex